IWC Pilot's Watches IW377704 43 mm Black Dial

The Pilot's Watch Chronograph IW377704 is a substantial expression of IWC's aviation chronograph family. Its black dial and 43mm stainless-steel case sit on a matching bracelet, with convex sapphire and antireflective coating keeping the busy display legible. The solid caseback and screw-down crown give this discontinued reference a straightforward, tool-minded character, while its XL classification is clear in the wrist presence.

Automatic calibre 79320 combines chronograph timing with day and date indications, plus small seconds, using a cam-controlled Valjoux 7750 base. It has 31 jewels, beats at 4Hz and offers 44 hours of power reserve. The 15.2mm case is rated to 60m, so the watch's defining qualities are its broad steel construction, substantial bracelet and information-rich pilot layout.